The depot line for the A-10 Thunderbolt is cranking back up as part of an effort to keep the Cold War-era aircraft flying “indefinitely,” a general said. Depot maintenance for the popular close-air-support aircraft, popularly known as the Warthog, has been “fully reopened,” Air Force Materiel Command chief Gen. Ellen Pawlikowski told Aviation Week on Monday. “They have re-geared up, we’ve turned on the depot line, we’re building it back up in capacity and supply chain,” Pawlikowski said. “Our command, anyway, is approaching this as another airplane that we are sustaining indefinitely.” Pawlikowski also told the magazine that Air Force maintainers are gearing up to replace the Warthog’s wings, dipping into a $2 billion Boeing contract originally awarded in 2007, according to Popular Mechanics . The contract was intended to upgrade the A-10 when the plan was to keep the airc...